Could the good folks on CONCH-L direct me to some literature that gives the approximate number of the extant shelled gastropod species (excluding slugs)? Many thanks. Aydin Orstan ---------------------------------------------------------------------- [log in to unmask] - a forum for informal discussions on molluscs To leave this list, click on the following web link: http://listserv.uga.edu/cgi-bin/wa?SUBED1=conch-l&A=1 Type your email address and name in the appropriate box and click leave the list. ----------------------------------------------------------------------